Country codes: J–K#South Korea
{{short description|none}}
{{Country codes nav}}
[[Jamaica]]
{{CountryCodes
|ISO3166-1-Num=388
|ISO3166-1-Trigram=JAM
|ISO3166-1-Digram=JM
|LicensePlate=JA
|E.164-Phone=1
|IOC=JAM
|InternetTLD=.jm
|FIPS10-4=JM
|E.212-Mobile=338
|ITU=JMC
|WMO=JM
|ICAO-Airport=MK
|EAN-UCC-GTIN=—
|ITU-Maritime=339
|LOC-MARC=JM
|ICAO-Aircraft=6Y-
|NATO-Trigram=JAM
|NATO-Digram=JM
|ITU-Callsign=6YA-6YZ
|UNDP=JAM}}
[[Japan]]
{{CountryCodes
|ISO3166-1-Num=392
|ISO3166-1-Trigram=JPN
|ISO3166-1-Digram=JP
|LicensePlate=J
|E.164-Phone=81
|IOC=JPN
|InternetTLD=.jp
|FIPS10-4=JA
|E.212-Mobile=441
|ITU=J
|WMO=JP
|ICAO-Airport=RJ, RO
|EAN-UCC-GTIN=450-459, 490-499
|ITU-Maritime=431, 432
|LOC-MARC=JA
|ICAO-Aircraft=JA-
|NATO-Trigram=JPN
|NATO-Digram=JA
|ITU-Callsign=7JA-7NZ,8JA-8NZ,JAA-JSZ
|UNDP=JPN}}
[[Jersey]] (British dependency)
{{CountryCodes
|ISO3166-1-Num=832
|ISO3166-1-Trigram=JEY
|ISO3166-1-Digram=JE
|LicensePlate=GBJ
|E.164-Phone=44
|IOC=—
|InternetTLD=.je
|FIPS10-4=JE
|E.212-Mobile=234
|ITU=—
|WMO=—
|ICAO-Airport=EG
|EAN-UCC-GTIN=—
|ITU-Maritime=—
|LOC-MARC=—
|ICAO-Aircraft=ZJ—
|NATO-Trigram=—
|NATO-Digram=—
|ITU-Callsign=—}}
[[Jordan]]
{{CountryCodes
|ISO3166-1-Num=400
|ISO3166-1-Trigram=JOR
|ISO3166-1-Digram=JO
|LicensePlate=HKJ
|E.164-Phone=962
|IOC=JOR
|InternetTLD=.jo
|FIPS10-4=JO
|E.212-Mobile=416
|ITU=JOR
|WMO=JD
|ICAO-Airport=OJ
|EAN-UCC-GTIN=625
|ITU-Maritime=438
|LOC-MARC=JO
|ICAO-Aircraft=JY-
|NATO-Trigram=JOR
|NATO-Digram=JO
|ITU-Callsign=JYA-JYZ
|UNDP=JOR}}
[[Kazakhstan]]
{{CountryCodes
|ISO3166-1-Num=398
|ISO3166-1-Trigram=KAZ
|ISO3166-1-Digram=KZ
|LicensePlate=KZ
|E.164-Phone=997
|IOC=KAZ
|InternetTLD=.kz
|FIPS10-4=KZ
|E.212-Mobile=401
|ITU=KAZ
|WMO=KZ
|ICAO-Airport=UA
|EAN-UCC-GTIN=487
|ITU-Maritime=436
|LOC-MARC=KZ
|ICAO-Aircraft=UN-
|NATO-Trigram=KAZ
|NATO-Digram=KZ
|ITU-Callsign=UNA-UQZ
|UNDP=KAZ}}
[[Kenya]]
{{CountryCodes
|ISO3166-1-Num=404
|ISO3166-1-Trigram=KEN
|ISO3166-1-Digram=KE
|LicensePlate=EAK
|E.164-Phone=254
|IOC=KEN
|InternetTLD=.ke
|FIPS10-4=KE
|E.212-Mobile=639
|ITU=KEN
|WMO=KN
|ICAO-Airport=HK
|EAN-UCC-GTIN=616
|ITU-Maritime=634
|LOC-MARC=KE
|ICAO-Aircraft=5Y-
|NATO-Trigram=KEN
|NATO-Digram=KE
|ITU-Callsign=5YA-5ZZ
|UNDP=KEN}}
[[Kiribati]]
{{CountryCodes
|ISO3166-1-Num=296
|ISO3166-1-Trigram=KIR
|ISO3166-1-Digram=KI
|LicensePlate=KIR {{nobold|(unofficial)}}
|E.164-Phone=686
|IOC=KIR
|InternetTLD=.ki
|FIPS10-4=KR
|E.212-Mobile=545
|ITU=KIR
|WMO=KB
|ICAO-Airport=NG
|EAN-UCC-GTIN=—
|ITU-Maritime=529
|LOC-MARC=GB
|ICAO-Aircraft=T3-
|NATO-Trigram=KIR
|NATO-Digram=KR
|ITU-Callsign=T3A-T3Z
|UNDP=KIR}}
[[North Korea]]
{{CountryCodes
|ISO3166-1-Num=408
|ISO3166-1-Trigram=PRK
|ISO3166-1-Digram=KP
|LicensePlate=KP {{nobold|(unofficial)}}
|E.164-Phone=850
|IOC=PRK
|InternetTLD=.kp
|FIPS10-4=KN
|E.212-Mobile=467
|ITU=KRE
|WMO=KR
|ICAO-Airport=ZK
|EAN-UCC-GTIN=867
|ITU-Maritime=445
|LOC-MARC=KN
|ICAO-Aircraft=P-
|NATO-Trigram=PRK
|NATO-Digram=KN
|ITU-Callsign=HMA-HMZ, P5A-P9Z
|UNDP=DRK{{efn|Democratic [People's] Republic of Korea}}}}
{{notelist}}
[[South Korea]]
{{CountryCodes
|ISO3166-1-Num=410
|ISO3166-1-Trigram=KOR
|ISO3166-1-Digram=KR
|LicensePlate=ROK
|E.164-Phone=82
|IOC=KOR
|InternetTLD=.kr
|FIPS10-4=KS
|E.212-Mobile=450
|ITU=KOR
|WMO=KO
|ICAO-Airport=RK
|EAN-UCC-GTIN=880
|ITU-Maritime=440, 441
|LOC-MARC=KO
|ICAO-Aircraft=HL-
|NATO-Trigram=KOR
|NATO-Digram=KS
|ITU-Callsign=6KA-6NZ, D7A-D9Z
DSA-DTZ, HLA-HLZ
|UNDP=ROK{{efn|Republic of Korea}}
}}
{{notelist}}
[[Kosovo]]
{{CountryCodes
|ISO3166-1-Num= - {{efn|For usage by the European Union and other institutions, provisionally 926}}
|ISO3166-1-Trigram= - {{efn|For usage by the European Union and other institutions, provisionally XKX}}
|ISO3166-1-Digram= - {{efn|For usage by the European Union and other institutions, provisionally XK}}
|LicensePlate=RKS
|E.164-Phone=383
|IOC=KOS
|InternetTLD=-
|FIPS10-4=KV
|E.212-Mobile=212
|ITU=-
|WMO=-
|ICAO-Airport=BK
|EAN-UCC-GTIN=-
|ITU-Maritime=-
|LOC-MARC=KV
|ICAO-Aircraft=Z6
|NATO-Trigram=-
|NATO-Digram=-
|ITU-Callsign=-
|UNDP=KOS}}
{{notelist}}
[[Kuwait]]
{{CountryCodes
|ISO3166-1-Num=414
|ISO3166-1-Trigram=KWT
|ISO3166-1-Digram=KW
|LicensePlate=KWT
|E.164-Phone=965
|IOC=KUW
|InternetTLD=.kw
|FIPS10-4=KU
|E.212-Mobile=419
|ITU=KWT
|WMO=KW
|ICAO-Airport=OK
|EAN-UCC-GTIN=627
|ITU-Maritime=447
|LOC-MARC=KU
|ICAO-Aircraft=9K-
|NATO-Trigram=KWT
|NATO-Digram=KU
|ITU-Callsign=9KA-9KZ
|UNDP=KUW}}
[[Kyrgyzstan]]
{{CountryCodes
|ISO3166-1-Num=417
|ISO3166-1-Trigram=KGZ
|ISO3166-1-Digram=KG
|LicensePlate=KS
|E.164-Phone=996
|IOC=KGZ
|InternetTLD=.kg
|FIPS10-4=KG
|E.212-Mobile=437
|ITU=KGZ
|WMO=KY
|ICAO-Airport=UC
|EAN-UCC-GTIN=470
|ITU-Maritime=—
|LOC-MARC=KG
|ICAO-Aircraft=EX-
|NATO-Trigram=KGZ
|NATO-Digram=KG
|ITU-Callsign=EXA-EXZ
|UNDP=KYR}}